# domain.hugen.tokyo SSL/TLS Certificate Analyzer

> domain.hugen.tokyo SSL/TLS Certificate Analyzer is a paid API for AI agents from domain.hugen.tokyo, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).

Analyzes SSL/TLS certificates and probes TLS protocol versions (1.0–1.3) for a domain, returning issuer, SAN list, serial number, validity period, days until expiry, and an A–F security grade.

## Facts

- Endpoint: GET https://domain.hugen.tokyo/domain/ssl
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/domain-hugen-tokyo-bb6842ab
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hPFCNOLxOfMuvPjcwzheZ

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability domain-hugen-tokyo-bb6842ab
```

Example prompt: Can you check the SSL certificate and TLS configuration for github.com — I want to see the issuer, SAN list, expiry date, how many days are left, which TLS versions are supported, and the overall A–F security grade?

## When to prefer this

Use this endpoint when you need detailed SSL/TLS certificate metadata and TLS version support information for a single domain without setting up local SSL libraries. It is preferable to generic HTTPS checkers when you need the full combination of cert parsing, per-version TLS probing, and a computed security grade in one call. It is part of a broader domain intelligence suite if you need multiple checks at once.

## Known failure modes

- Domain does not exist or is unreachable — no certificate data returned
- Domain has no SSL certificate — empty or error response
- TLS handshake timeout for a specific version — partial probe results
- Invalid domain input format — 400 error
- Payment not processed — 402 response

## How this service works

SSL/TLS certificate analysis — issuer, SAN list, serial number, validity period, days until expiry. TLS 1.0/1.1/1.2/1.3 individual probing. Automated A-F security grade. No SSL library setup or certificate parsing needed. Accepts USDC payments on Base and Solana

## Output

Returns SSL certificate details (issuer, SAN list, serial number, validity period, days until expiry) plus per-version TLS probe results for 1.0, 1.1, 1.2, and 1.3, and an automated A–F security grade — all without requiring any local SSL library or certificate parsing.

## Example request

```json
{
 "domain": "github.com"
}
```

## Request schema (JSON Schema)

```json
{
 "properties": {
  "input": {
   "required": [
    "method"
   ]
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/domain-hugen-tokyo-bb6842ab/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from domain.hugen.tokyo](https://www.zero.xyz/host/domain.hugen.tokyo/llms.txt)